禾本科

1.Most grass embryos have a flap-like structure known as the epiblast.

大多数禾本科胚有一片瓣状结构通常称为外胚叶。

2.A small creeping herb(Dichondra micrantha) commercially cultivated as a substitute for lawn grass.

一个禾本科植物属，有蔓，丛生或多年生或一年生；指状禾；蔓昂。

3.The ryegrass rust (Puccinia coronate) may infect many grasses, particulary ryegrass.

黑锈病是由禾柄锈菌所致，除危害黑外还可侵染多种禾本科牧。

4.The mature embryo is corn posed of radicle, coleorhiza, plumule, coleoptile, scutellum and epiblast.That is the typical structure of the mature embryo of grass.

成熟胚具有胚根、胚芽、盾片、胚芽鞘、胚根鞘、外胚叶等典型禾本科植物成熟胚的结构。